Rangers are reportedly monitoring the situation with US left-back George Bello, who is currently plying his trade with Austrian Bundesliga outfit LASK. With Leon Balogun now leaving Rangers and Robin Propper likely to quit Ibrox, there is plenty of attention on who will come in to bolster the Rangers backline. Estoril defender Kevin Boma has also been linked to Rangers, as the club looks to improve a defence which almost completely collapsed under Barry Ferguson.